Sheila from Fenelton, Pa writes
Bifen L/P Insecticide Granules are not labeled for control of roaches or stink bugs. Roaches are difficult to kill with lawn granules because they are larger insects and often travel on the top of treated areas where they would not contact a product that has been watered into the ground. For stink bugs, we recommend using a residual insecticide spray such as Bifen IT applied to the structure in late summer and fall to prevent this overwintering pest from entering your home.
We have detailed Treatment and Prevention Guides for both of these insects:
Roach Prevention Guide
Stink Bug Prevention Guide
Answer last updated on: 05/19/2021